An experimental study of the unsteady vortex structures of a clapping-wing micro air vehicle

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-01-01 DOI:10.1177/17568293221125846

Yanwei Zhang, Zhonglai Wang

引用次数: 1

Abstract

It is a challenge to explore the unsteady vortex structures of flexible flapping wings of X-shaped flapping-wing micro air vehicles (also known as clapping-wing micro air vehicles (CWMAVs)). The objective of this paper is to obtain the influence of wind speed, flapping frequency, and angle of attack (AoA) on the instantaneous and average force coefficients of CWMAVs, investigate flow visualization of the leading-edge vortex (LEV), trailing-edge vortex (TEV) and wake vortex (WV) structures and identify some novel flow mechanisms of flapping propulsion. This paper proposes a mechanics and particle image velocimetry (PIV) measuring platform in a low-speed tunnel. In addition, cross-correlation peak analysis and kriging image reconstruction are applied for postprocessing to enhance PIV image recognition. Combining the time evolution of the forces, the force coefficients, and the flow visualization, we find the evolution and effects of LEV, TEV and WV structures.

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拍板翼微型飞行器非定常涡结构的实验研究

探索X型扑翼微型飞行器（也称为拍板翼微型飞行器）柔性扑翼的非定常涡结构是一项挑战。本文的目的是获得风速、扑动频率和攻角（AoA）对CWMAV瞬时和平均力系数的影响，研究前缘涡（LEV）、后缘涡（TEV）和尾流涡（WV）结构的流动可视化，并确定一些新型的扑动推进流动机制。本文提出了一种用于低速隧道的力学和粒子图像测速（PIV）测量平台。此外，应用互相关峰值分析和克里格图像重建进行后处理，以增强PIV图像的识别能力。结合力的时间演化、力系数和流动可视化，我们发现了LEV、TEV和WV结构的演化和影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.